<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>结构分区</title>
	</head>
	<body>
		<div>
			头部区域
			<span>hello</span>
			<span>world</span>
			<span>abc</span>  
		</div>
		<div>
			导航区域
		</div>
		<div>
			<div>左侧</div>
			<div>中间</div>
			<div>右侧</div>
		</div>
	</body>
</html>